CN113062203A - Construction method for splicing bridge prefabricated stand column and prefabricated capping beam - Google Patents
Construction method for splicing bridge prefabricated stand column and prefabricated capping beam Download PDFInfo
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- CN113062203A CN113062203A CN202110224095.5A CN202110224095A CN113062203A CN 113062203 A CN113062203 A CN 113062203A CN 202110224095 A CN202110224095 A CN 202110224095A CN 113062203 A CN113062203 A CN 113062203A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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Abstract
The invention provides a construction method for splicing a prefabricated stand column and a prefabricated capping beam, which comprises the following steps: s10: marking a plurality of first datum lines on the prefabricated capping beam; s20: marking a plurality of corresponding second datum lines at the top ends of the installed prefabricated stand columns; s30: at least three adjusting cushion blocks are arranged at the top end of the installed prefabricated upright post; s40: splicing the precast capping beam to the top end of the installed precast column; adjusting the position of the precast capping beam to align the first reference line with the second reference line; s50: mounting a mortar sitting protection device at the top end of the mounted prefabricated stand column, and sitting mortar; s60: and (4) grouting the prefabricated capping beam by using a grouting device, and then grouting. The invention solves the technical problem that the positioning precision is difficult to control in the splicing process, and realizes the technical effect of accurate positioning.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a construction method for splicing a bridge prefabricated stand column and a prefabricated capping beam.
Background
With the rapid development of national economic level, the bridge construction business of China is also rapidly developed. In the bridge construction process, the prefabricated bent cap splicing construction technology can obviously shorten the construction period and reduce the construction road occupying time, and meanwhile, the prefabricated bent cap splicing construction technology has the advantages of high construction quality, low safety risk, environmental protection and the like. Therefore, the splicing construction technology of the prefabricated capping beam is widely applied to municipal bridge construction.
However, in the splicing construction process of the precast capping beam and the precast vertical column, there is a problem that: the positioning precision between the prefabricated capping beam and the installed prefabricated upright post is difficult to control.
Disclosure of Invention
The invention solves the technical problem that the positioning precision between the prefabricated capping beam and the installed prefabricated upright post is difficult to control in the splicing construction process of the prefabricated capping beam and the prefabricated upright post.
In order to solve the problems, the invention provides a construction method for splicing a prefabricated stand column and a prefabricated capping beam. The construction method for splicing the prefabricated stand column and the prefabricated capping beam comprises the following steps: s10: marking a plurality of first datum lines on the prefabricated capping beam; s20: marking a plurality of corresponding second datum lines at the top ends of the installed prefabricated stand columns; s30: at least three adjusting cushion blocks are arranged at the top end of the installed prefabricated upright post; s40: splicing the prefabricated capping beam to the top end of the installed prefabricated upright column, and inserting a plurality of reserved steel bars of the installed prefabricated upright column into a plurality of embedded sleeves of the prefabricated capping beam in a one-to-one correspondence manner; adjusting the position of the precast capping beam by using a hoisting device so as to align the first reference line with the second reference line; s50: mounting a mortar sitting protection device at the top end of the mounted prefabricated stand column, and sitting mortar; s60: and (4) grouting the prefabricated capping beam by using a grouting device, and then grouting.
In this embodiment, a plurality of reference lines are marked on the precast capping beam and the installed precast upright column, and the precast capping beam and the installed precast upright column are accurately positioned by the reference lines, so that the construction frequency in the splicing construction process of the precast capping beam and the installed precast upright column is improved.
Further, the S10 specifically includes: s11: measuring the position of a first datum line by taking the center of the embedded sleeve of the precast bent cap as a reference, and marking; s12: and ejecting a first reference line with an ink line at the marking position.
In this embodiment, the position of the first reference line is determined on the precast capping beam through the center of the embedded sleeve of the precast capping beam. And in the splicing process, according to the first datum line on the cover beam, convenience is provided for the splicing process of the prefabricated cover beam and the installed prefabricated stand column, and the splicing construction time of the prefabricated cover beam and the installed prefabricated stand column is further shortened.
Further, the S11 specifically includes: s13: measuring the cross section of the bottom of the prefabricated bent cap by taking the central position of the embedded sleeve as a reference, and marking a first reference line; s14: and measuring the longitudinal length of the bottom of the prefabricated bent cap by taking the central position of the embedded sleeve as a reference, and marking the first reference line.
In this embodiment, by marking a plurality of first reference lines on the precast capping beam, the positioning accuracy of the precast capping beam and the installed precast column in the splicing process can be further improved, so that the splicing of the precast capping beam and the installed precast column is more accurate, and the splicing construction efficiency of the precast capping beam and the installed precast column is improved.
Further, S21: retesting the central lines of four circumferential surfaces of the installed prefabricated stand column, and popping up the second datum line by using ink lines according to the retested central lines; s22: and sleeving a positioning device into the embedded steel bars of the prefabricated stand column so as to adjust the perpendicularity and the distance of the embedded steel bars of the installed prefabricated stand column.
In this embodiment, the center lines of four circumferential surfaces of the installed prefabricated column are retested, and the second reference line is popped up on the installed prefabricated column according to the retested data, so that the error between the prefabricated capping beam and the installed prefabricated column in the splicing process is reduced, and the accuracy of the prefabricated capping beam and the installed prefabricated column in the splicing construction process is further improved.
Further, the S40 specifically includes: s41: moving the prefabricated capping beam above the installed prefabricated upright column, and placing the prefabricated capping beam under the installed prefabricated upright column in alignment; s42: inserting a plurality of reserved steel bars of the installed prefabricated stand columns into a plurality of embedded sleeves of the prefabricated capping beam in a one-to-one correspondence manner; s43: and after the prefabricated bent cap is placed in place, positioning and adjusting the prefabricated bent cap through a hoisting device so as to align the first datum line with the second datum line.
In this embodiment, the hoisting device is used for positioning and adjusting the prefabricated capping beam, so that the prefabricated capping beam can be kept stable in the positioning and adjusting process, and larger errors compared with those before adjustment are avoided in the process of moving the prefabricated capping beam.
Further, the S40 further includes: s44: when the hoisting device cannot be adjusted in place, installing a conical clamping piece on the embedded steel bar of the installed prefabricated stand column for adjustment; wherein the mounting direction of the conical clamping piece is the direction opposite to the deviation; the thickness and the deviation value of the lowest end of the conical clamping piece are the same.
In this embodiment, when the hoisting device cannot be adjusted in place, the prefabricated capping beam can be further adjusted through the tapered clamping piece, so that a deviation value between the prefabricated capping beam and the installed prefabricated stand column in the splicing construction process is reduced as much as possible.
Further, the S40 further includes: and S45, respectively observing the deflection angle between the first datum line of the cross section of the bottom of the prefabricated capping beam and the second datum line of the installed prefabricated upright column by using a measuring device, and adjusting the adjusting cushion block to enable the prefabricated capping beam to be plumbed to the ground.
In this embodiment, when there is a drift angle between the first reference line of the cross section at the bottom of the precast capping beam and the second reference line of the installed precast vertical column, the height of the adjusting shim may be adjusted by the adjusting shim, so that the precast capping beam plumbs to the ground.
Further, the S50 specifically includes: s51: enclosing the mortar sitting protection device at the top end of the installed prefabricated stand column to form a mortar sitting area at the top end of the prefabricated stand column; s52: sending workers and the setting slurry to the position above the installed prefabricated upright post; s53: and uniformly paving the sitting slurry in the sitting slurry area so that the sitting slurry is higher than the adjusting gasket and is level with the sitting slurry protection device.
In this embodiment, after the positioning adjustment process is completed, a grout sitting protection device is installed at the top end of the installed prefabricated stand column, and grout is sat. On one hand, the bottom connecting surface of the prefabricated capping beam and the top end surface of the installed prefabricated upright post can be bonded together, so that the overall stability of the prefabricated capping beam and the installed prefabricated upright post is improved; on the other hand, the sitting thick liquid after the solidification shaping can be right the adjusting shim with prefabricated bent cap plays spacing effect, prevents to produce the dislocation once more in subsequent work progress, influences prefabricated bent cap's bottom connect the face with the concatenation precision between the prefabricated stand's that has installed top is connected the face.
Further, the S60 specifically includes: s61: removing the plug of the reserved slurry inlet and the plug of the reserved slurry outlet of the precast capping beam, and connecting the grouting joint of the grouting device to the reserved slurry inlet of the precast capping beam; s62: grouting the prefabricated bent cap through the grouting device, when grout flows out of the reserved grout outlet, withdrawing the grouting joint, blocking the reserved grout outlet and the reserved grout inlet, and finishing grouting; s63: injecting the grout into the pre-buried sleeve of the precast capping beam until the grout can completely fill the pre-buried sleeve, and finishing grouting; and the reserved slurry inlet of the prefabricated capping beam is positioned below the reserved slurry outlet of the prefabricated capping beam.
In this embodiment, after the grout is sat and the construction is finished, use the mud jacking device to right prefabricated bent cap carries out the mud jacking for thick liquid is full of completely the pre-buried sleeve of prefabricated bent cap. The pre-embedded sleeve of the prefabricated bent cap and the pre-embedded steel bars of the installed prefabricated stand column are bonded together, so that the splicing accuracy of the pre-embedded steel bars and the pre-embedded sleeve is guaranteed.
After the mud jacking construction, it is right prefabricated bent cap the pre-buried sleeve is in milk, prevents there is the phenomenon of bubble in taking place to sit the thick liquid in the pre-buried sleeve of prefabricated bent cap, further ensures the pre-buried sleeve of prefabricated bent cap with the concatenation precision between the embedded steel bar of the prefabricated stand of having installed.
After the technical scheme of the invention is adopted, the following technical effects can be achieved:
(1) in the construction process of splicing the prefabricated capping beam and the prefabricated stand column, the technical effect of accurate positioning between the prefabricated capping beam and the prefabricated stand column is realized;
(2) the prefabricated bent cap and the installed prefabricated stand column are spliced accurately, and the construction efficiency in the splicing process of the prefabricated bent cap and the prefabricated stand column is improved.
Drawings
Fig. 1 is a schematic flow chart of a construction method for splicing a prefabricated capping beam 200 and an installed prefabricated upright post 100 according to an embodiment of the present invention.
Fig. 2 is a schematic illustration of the splicing of a prefabricated capping beam 200 to an installed prefabricated upright 100.
Fig. 3 is a schematic flowchart of step S10 in fig. 1.
Fig. 4 is a schematic flowchart of step S11 in fig. 3.
Fig. 5 is a top view of the installed prefabricated stud 100 of step S30.
Fig. 6 is a schematic view of the connection of the grout guard 300 to the installed prefabricated stud 100 in step S50.
Fig. 7 is a detailed flowchart of step S40 in fig. 1.
Fig. 8 is a detailed flowchart of step S50 in fig. 1.
Fig. 9 is a detailed flowchart of step S60 in fig. 1.
Description of reference numerals:
100-prefabricated columns already installed; 101-a second reference line; 102-embedding reinforcing steel bars; 103-adjusting the gasket; 200-prefabricating a capping beam; 201-a first reference line; 202-embedding a sleeve; 300-sitting in the thick liquid protector; 301-sitting mud area.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1 and 2, in the splicing construction method of the precast capping beam and the precast column according to the embodiment of the present invention, a plurality of reference lines are respectively marked on the precast capping beam 200 and the installed precast column 100, and the precast capping beam 200 and the installed precast column 100 are aligned through the plurality of reference lines, so that leveling and adjustment between the precast capping beam 200 and the installed precast column 100 are achieved. The construction method for splicing the prefabricated capping beam and the prefabricated upright column comprises the following steps:
step S10: marking a plurality of first reference lines 201 on the precast capping beam 200;
step S20: marking a plurality of second reference lines 101 at the top ends of the installed prefabricated vertical columns 100;
step S30: at least three adjusting cushion blocks 103 are arranged at the top end of the installed prefabricated upright 100;
step S40: splicing the prefabricated capping beam 200 to the top end of the installed prefabricated upright post 100, so that a plurality of reserved steel bars 102 of the installed prefabricated upright post 100 are inserted into a plurality of embedded sleeves 202 of the prefabricated capping beam 200 in a one-to-one correspondence manner; adjusting the position of the precast capping beam 200 by using a hoisting device so that the first reference line 201 is aligned with the second reference line 101;
step S50: mounting a mortar sitting protection device 300 at the top end of the mounted prefabricated upright 100, and sitting mortar;
step S60: the precast capping beam 200 is grouted using a grouting device and then grouted.
Before the prefabricated bent cap 200 leaves the factory, constructors can draw the center line of the cross section of the bottom of the prefabricated bent cap 200 and the longitudinal center line of the bottom of the bent cap by taking the center of the embedded sleeve 202 of the prefabricated bent cap 200 as a reference, so that the prefabricated bent cap 200 is convenient to hoist on site, and when being loaded, the prefabricated bent cap 200 is loaded in a mode of being low in the front and high in the back, and then the prefabricated bent cap 200 is transported to a position, needing to be installed, from a prefabricated bent cap pouring area by a flat car to wait for installation.
First, a plurality of first reference lines 201 are marked on the precast capping beam 200. Measuring the position of a first datum line 201 by taking the center of the embedded sleeve of the precast bent cap 100 as a datum, and marking; the first reference line 201 is ejected with ink lines at the marking position. For example, the first reference line 201 may be a cross-shaped first reference line, and the cross-shaped first reference line may be used as a coordinate location to determine the leveling and aligning position.
Specifically, the central position of the embedded sleeve is used as a reference, the cross section of the bottom of the prefabricated bent cap 200 is measured, and a first reference line 201 is marked; and measuring the longitudinal length of the bottom of the prefabricated bent cap 200 by taking the central position of the embedded sleeve as a reference, and marking a first reference line 201.
For example, the first reference line 201 may be embossed in the corresponding position of the prefabricated capping beam 200 by ink line embossing. The ink line bullet seal mode can guarantee that the line of drawing is more straight, and the position location is more accurate. Of course, the plurality of first reference lines 201 may also be drawn by directly using pens to corresponding positions on the prefabricated bent cap 200 before the factory shipment.
Further, observing the central lines of four circumferential surfaces of the installed prefabricated upright column 101 by using a measuring instrument, and popping the second datum line 101 by using ink lines according to the newly measured central lines; for example, the measuring instrument may be one of a level, a theodolite, a total station, and a distance measuring instrument, or multiple measuring instruments may be used in combination to precisely position the second reference line 101, so as to improve the construction efficiency of the precast capping beam 200 during splicing with the installed precast upright 100.
Further, at least three adjusting blocks are placed on the top end of the installed prefabricated upright 100.
Further, the positioning device is sleeved into the embedded steel bars 102 of the prefabricated upright 100 to adjust the verticality and the distance of the installed embedded steel bars 102 of the prefabricated upright 100. Specifically, a plurality of positioning devices are sleeved into the reserved steel bars 102 in a one-to-one correspondence manner, and the verticality and the distance between the installed embedded steel bars 102 of the prefabricated stand column 100 are adjusted.
Through adjusting embedded steel bar 102, can avoid at the in-process of embedded steel bar 102 with embedded sleeve 202 in the concatenation, because embedded steel bar 102 bending and embedded steel bar 102 interval error cause embedded steel bar 102 card in embedded sleeve 202, the appearance of phenomenon such as unable normal concatenation.
Further, moving the precast capping beam 200 above the installed precast concrete column 100, and placing the precast capping beam 200 downward in alignment with the installed precast concrete column 100; inserting a plurality of embedded steel bars 102 of the installed prefabricated upright posts 100 into a plurality of embedded sleeves 202 of the prefabricated capping beam 200 in a one-to-one correspondence manner; and after the prefabricated bent cap is placed in place, positioning and adjusting the prefabricated bent cap through a hoisting device so as to align the first datum line with the second datum line.
Specifically, the second reference line 101 marked on the installed precast upright post 100 and the first reference line 201 marked on the precast capping beam 200 are observed by using a measuring instrument, the position of the first reference line 201 is determined according to the position of the second reference line 101, and the position of the precast capping beam 200 is adjusted by the hoisting device. For example, the hoisting device may be a crawler crane or a gantry crane, and the precast capping beam 200 is precisely positioned and adjusted by moving the hoisting device, so that the precast capping beam 200 can be kept stable in the positioning and adjusting process, and a larger error compared with that before adjustment is avoided in the process of moving the precast capping beam 200.
Further, when the hoisting device cannot adjust the precast capping beam 200 in place, a tapered clip may be installed on the embedded steel bars 102 of the installed precast column 100 for further adjustment, the installation direction of the tapered clip is the opposite direction of the deviation direction, and the thickness of the lowest end of the tapered clip is the same as the deviation value.
For example, after the hoisting device is used to adjust the position of the precast capping beam 200, under the condition that a certain deviation still exists between the first reference line 201 and the second reference line 101, the precast capping beam 200 is hoisted, the tapered clamping pieces are installed on the embedded steel bars, and the position of the precast capping beam 200 is further adjusted through the limiting action of the tapered clamping pieces, so that the deviation value between the precast capping beam 200 and the installed precast upright post 100 in the splicing construction process is reduced as much as possible. And under the condition that the hoisting device cannot be adjusted in place, the prefabricated capping beam 200 and the installed prefabricated upright post 100 can be accurately spliced through the conical clamping pieces.
Further, a measuring device is used for respectively observing a deflection angle between the first datum line of the cross section of the bottom of the prefabricated capping beam and the second datum line of the installed prefabricated upright post, and the height of the adjusting cushion block is adjusted to enable the prefabricated capping beam to be plumbed to the ground. Wherein the surveying instrument may be a total station.
For example, when the observation result of the total station indicates that an offset angle exists between the first reference line 201 and the second reference line 101, the crane is used for hoisting the precast capping beam 200, and the height of the adjusting pad block facing to the offset angle deviation direction side is increased, so that the offset angle between the first reference line 201 and the second reference line 101 is zero degree. At this time, the precast capping beam 200 is plumbed to the ground.
Further, a mortar setting protector 300 is installed at the top end of the installed prefabricated upright 100, and mortar setting construction is performed. Specifically, the mortar sitting protection device 300 is arranged at the top end of the installed prefabricated upright 100 in a surrounding manner, so that a mortar sitting area 301 is formed at the top end of the installed prefabricated upright 100; sending the worker and setting grout over the installed prefabricated columns 100; the sitting slurry is uniformly laid in the sitting slurry area 301, so that the sitting slurry is flush with the sitting slurry protection device 300 above the adjusting gasket 103. And after the sitting slurry is solidified, the sitting slurry protection device 300 is detached.
On one hand, the bottom connecting surface of the prefabricated capping beam 200 and the top end surface of the installed prefabricated upright 100 can be bonded together, so that the stability of the whole prefabricated capping beam 200 and the installed prefabricated upright 100 is improved; on the other hand, the setting slurry after solidification forming can play a limiting role on the adjusting gasket 103 and the prefabricated capping beam 200, and can prevent dislocation from being generated again in the subsequent construction process, so that the splicing precision between the bottom connecting surface of the prefabricated capping beam 200 and the top connecting surface of the installed prefabricated upright post 100 is influenced.
Further, the precast capping beam 200 is grouted using a grouting device and then grouted.
Specifically, the plug of the reserved slurry inlet and the plug of the reserved slurry outlet of the precast capping beam 200 are removed, and the grouting joint of the grouting device is connected to the reserved slurry inlet at the bottom of the precast capping beam 200. And then, grouting the prefabricated capping beam 200 by using the grouting device, when grout flows out from the reserved grout outlet at the top of the prefabricated capping beam 200, withdrawing the grouting joint, blocking the reserved grout outlet and the reserved grout inlet, and finishing grouting. Through the mud jacking construction, can bond a plurality of embedded sleeves 202 of prefabricated bent cap 200 and a plurality of embedded steel bars 102 of prefabricated stand 100 installed together to guarantee the concatenation precision of embedded steel bar 102 and embedded sleeve 202.
Further, the grout is injected into the embedded sleeve 202 of the precast capping beam 200, and after the grout is filled, the grout is tamped by a steel bar, so that the embedded sleeve 202 can be completely filled with the grout, and grouting is finished. By grouting the embedded sleeve 202 of the precast capping beam 200, the phenomenon that air bubbles exist in the grout is prevented from occurring in the embedded sleeve 202 of the precast capping beam 200, and the splicing accuracy between the embedded sleeve 202 of the precast capping beam 200 and the embedded steel bars 102 of the installed precast vertical columns 100 is further ensured.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. A construction method for splicing a prefabricated stand column and a prefabricated capping beam is characterized by comprising the following steps:
s10: marking a plurality of first datum lines on the prefabricated capping beam;
s20: marking a plurality of corresponding second datum lines at the top ends of the installed prefabricated stand columns;
s30: at least three adjusting cushion blocks are arranged at the top end of the installed prefabricated upright post;
s40: splicing the precast capping beam to the top end of the installed precast column; adjusting the position of the precast capping beam to align the first reference line with the second reference line;
s50: mounting a mortar sitting protection device at the top end of the mounted prefabricated stand column, and sitting mortar;
s60: and (4) grouting the prefabricated capping beam by using a grouting device, and then grouting.
2. The construction method for splicing the prefabricated stand column and the prefabricated capping beam according to claim 1, wherein the step S10 specifically comprises the following steps:
s11: measuring the position of a first datum line by taking the center of an embedded sleeve of the prefabricated bent cap as a reference, and marking;
s12: and ejecting a first reference line with an ink line at the marking position.
3. The construction method for splicing the prefabricated stand column and the prefabricated capping beam according to claim 2, wherein the step S11 specifically comprises the following steps:
s13: measuring the cross section of the bottom of the prefabricated bent cap by taking the central position of the embedded sleeve as a reference, and marking a first reference line;
s14: and measuring the longitudinal length of the bottom of the prefabricated bent cap by taking the central position of the embedded sleeve as a reference, and marking the first reference line.
4. The construction method for splicing the prefabricated stand column and the prefabricated capping beam according to claim 1, wherein the step S20 specifically comprises the following steps:
s21: observing the central lines of four circumferential surfaces of the installed prefabricated upright column by using a measuring instrument, and popping up the second datum line by using an ink line according to the newly measured central line;
s22: and sleeving a positioning device into the embedded steel bars of the prefabricated stand column so as to adjust the verticality and the space of the embedded steel bars of the installed prefabricated stand column.
5. The construction method for splicing the prefabricated stand column and the prefabricated capping beam according to claim 1, wherein the step S40 specifically comprises the following steps:
s41: moving the prefabricated capping beam above the installed prefabricated upright column, and placing the prefabricated capping beam under the installed prefabricated upright column in alignment;
s42: inserting a plurality of reserved steel bars of the installed prefabricated stand columns into a plurality of embedded sleeves of the prefabricated capping beam in a one-to-one correspondence manner;
s43: and after the prefabricated bent cap is placed in place, positioning and adjusting the prefabricated bent cap through a hoisting device so as to align the first datum line with the second datum line.
6. The construction method for splicing the prefabricated upright post and the prefabricated capping beam according to the claim 5, wherein the S40 further comprises:
s44: when the hoisting device cannot be adjusted in place, installing a conical clamping piece on the embedded steel bar of the installed prefabricated stand column for adjustment;
wherein the mounting direction of the conical clamping piece is the direction opposite to the deviation; the thickness and the deviation value of the lowest end of the conical clamping piece are the same.
7. The construction method for splicing the prefabricated upright post and the prefabricated capping beam according to the claim 5, wherein the S40 further comprises:
and S45, respectively observing the deflection angle between the first datum line of the cross section of the bottom of the prefabricated capping beam and the second datum line of the installed prefabricated upright column by using a measuring device, and adjusting the adjusting cushion block to enable the prefabricated capping beam to be plumbed to the ground.
8. The construction method for splicing the prefabricated stand column and the prefabricated capping beam according to claim 1, wherein the step S50 specifically comprises the following steps:
s51: enclosing the mortar sitting protection device at the top end of the installed prefabricated stand column to form a mortar sitting area at the top end of the prefabricated stand column;
s52: sending workers and the setting slurry to the position above the installed prefabricated upright post;
s53: and uniformly paving the sitting slurry in the sitting slurry area so that the sitting slurry is higher than the adjusting gasket and is level with the sitting slurry protection device.
9. The construction method for splicing the prefabricated stand column and the prefabricated capping beam according to claim 1, wherein the step S60 specifically comprises the following steps:
s61: dismantling a plug of a reserved slurry inlet and a plug of a reserved slurry outlet of the precast bent cap, and connecting the grouting joint of the grouting device to the reserved slurry inlet of the precast bent cap;
s62: grouting the prefabricated bent cap through the grouting device, when grout flows out of the reserved grout outlet, withdrawing the grouting joint, blocking the reserved grout outlet and the reserved grout inlet, and finishing grouting;
s63: injecting the grout into the pre-buried sleeve of the precast capping beam until the grout can completely fill the pre-buried sleeve, and finishing grouting;
and the reserved slurry inlet of the prefabricated capping beam is positioned below the reserved slurry outlet of the prefabricated capping beam.
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| CN202110224095.5A CN113062203A (en) | 2021-03-01 | 2021-03-01 | Construction method for splicing bridge prefabricated stand column and prefabricated capping beam |
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